Radeon HD 7970 X2 vs HD 7660D
Contents
Primary details
GPU architecture, market segment, value for money and other general parameters compared.
| Place in the ranking | 1095 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.09 | no data |
| Power efficiency | 0.94 | no data |
| Architecture | TeraScale 3 (2010−2013) | GCN 1.0 (2012−2020) |
| GPU code name | Devastator | New Zealand |
| Market segment | Desktop | Desktop |
| Release date | 2 October 2012 (13 years ago) | 31 August 2012 (13 years ago) |
| Launch price (MSRP) | $122 | $899 |
Cost-effectiveness evaluation
The higher the ratio, the better. We use the manufacturer's recommended prices.
Performance to price scatter graph
Detailed specifications
General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.
| Pipelines / CUDA cores | 384 | 2048 ×2 |
| Core clock speed | 800 MHz | 925 MHz |
| Boost clock speed | 800 MHz | no data |
| Number of transistors | 1,303 million | 4,313 million |
| Manufacturing process technology | 32 nm | 28 nm |
| Power consumption (TDP) | 100 Watt | 500 Watt |
| Texture fill rate | 19.20 | 118.4 ×2 |
| Floating-point processing power | 0.6144 TFLOPS | 3.789 TFLOPS ×2 |
| ROPs | 8 | 32 ×2 |
| TMUs | 24 | 128 ×2 |
| L1 Cache | no data | 512 KB |
| L2 Cache | no data | 768 KB |
Form factor & compatibility
Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).
| Interface | IGP | PCIe 3.0 x16 |
| Length | no data | 292 mm |
| Width | IGP | 2-slot |
| Supplementary power connectors | no data | 3x 8-pin |
VRAM capacity and type
Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.
| Memory type | System Shared | GDDR5 |
| Maximum RAM amount | System Shared | 3 GB ×2 |
| Memory bus width | System Shared | 384 Bit ×2 |
| Memory clock speed | System Shared | 1375 MHz |
| Memory bandwidth | no data | 264.0 GB/s ×2 |
| Shared memory | + | - |
Connectivity and outputs
This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.
| Display Connectors | No outputs | 1x DVI, 4x mini-DisplayPort |
API and SDK support
List of supported 3D and general-purpose computing APIs, including their specific versions.
| DirectX | 11.2 (11_0) | 12 (11_1) |
| Shader Model | 5.0 | 5.1 |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | N/A | 1.2.131 |
Pros & cons summary
| Recency | 2 October 2012 | 31 August 2012 |
| Chip lithography | 32 nm | 28 nm |
| Power consumption (TDP) | 100 Watt | 500 Watt |
HD 7660D has an age advantage of 1 month, and 400% lower power consumption.
HD 7970 X2, on the other hand, has a 14% more advanced lithography process.
We couldn't decide between Radeon HD 7660D and Radeon HD 7970 X2. We've got no test results to judge.
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